drm/i915: fix applying placement flag
[sfrench/cifs-2.6.git] / drivers / gpu / drm / msm / dsi / dsi_manager.c
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * Copyright (c) 2015, The Linux Foundation. All rights reserved.
4  */
5
6 #include "drm/drm_bridge_connector.h"
7
8 #include "msm_kms.h"
9 #include "dsi.h"
10
11 #define DSI_CLOCK_MASTER        DSI_0
12 #define DSI_CLOCK_SLAVE         DSI_1
13
14 #define DSI_LEFT                DSI_0
15 #define DSI_RIGHT               DSI_1
16
17 /* According to the current drm framework sequence, take the encoder of
18  * DSI_1 as master encoder
19  */
20 #define DSI_ENCODER_MASTER      DSI_1
21 #define DSI_ENCODER_SLAVE       DSI_0
22
23 struct msm_dsi_manager {
24         struct msm_dsi *dsi[DSI_MAX];
25
26         bool is_bonded_dsi;
27         bool is_sync_needed;
28         int master_dsi_link_id;
29 };
30
31 static struct msm_dsi_manager msm_dsim_glb;
32
33 #define IS_BONDED_DSI()         (msm_dsim_glb.is_bonded_dsi)
34 #define IS_SYNC_NEEDED()        (msm_dsim_glb.is_sync_needed)
35 #define IS_MASTER_DSI_LINK(id)  (msm_dsim_glb.master_dsi_link_id == id)
36
37 static inline struct msm_dsi *dsi_mgr_get_dsi(int id)
38 {
39         return msm_dsim_glb.dsi[id];
40 }
41
42 static inline struct msm_dsi *dsi_mgr_get_other_dsi(int id)
43 {
44         return msm_dsim_glb.dsi[(id + 1) % DSI_MAX];
45 }
46
47 static int dsi_mgr_parse_of(struct device_node *np, int id)
48 {
49         struct msm_dsi_manager *msm_dsim = &msm_dsim_glb;
50
51         /* We assume 2 dsi nodes have the same information of bonded dsi and
52          * sync-mode, and only one node specifies master in case of bonded mode.
53          */
54         if (!msm_dsim->is_bonded_dsi)
55                 msm_dsim->is_bonded_dsi = of_property_read_bool(np, "qcom,dual-dsi-mode");
56
57         if (msm_dsim->is_bonded_dsi) {
58                 if (of_property_read_bool(np, "qcom,master-dsi"))
59                         msm_dsim->master_dsi_link_id = id;
60                 if (!msm_dsim->is_sync_needed)
61                         msm_dsim->is_sync_needed = of_property_read_bool(
62                                         np, "qcom,sync-dual-dsi");
63         }
64
65         return 0;
66 }
67
68 static int dsi_mgr_setup_components(int id)
69 {
70         struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id);
71         struct msm_dsi *other_dsi = dsi_mgr_get_other_dsi(id);
72         struct msm_dsi *clk_master_dsi = dsi_mgr_get_dsi(DSI_CLOCK_MASTER);
73         struct msm_dsi *clk_slave_dsi = dsi_mgr_get_dsi(DSI_CLOCK_SLAVE);
74         int ret;
75
76         if (!IS_BONDED_DSI()) {
77                 ret = msm_dsi_host_register(msm_dsi->host);
78                 if (ret)
79                         return ret;
80
81                 msm_dsi_phy_set_usecase(msm_dsi->phy, MSM_DSI_PHY_STANDALONE);
82                 msm_dsi_host_set_phy_mode(msm_dsi->host, msm_dsi->phy);
83         } else if (other_dsi) {
84                 struct msm_dsi *master_link_dsi = IS_MASTER_DSI_LINK(id) ?
85                                                         msm_dsi : other_dsi;
86                 struct msm_dsi *slave_link_dsi = IS_MASTER_DSI_LINK(id) ?
87                                                         other_dsi : msm_dsi;
88                 /* Register slave host first, so that slave DSI device
89                  * has a chance to probe, and do not block the master
90                  * DSI device's probe.
91                  * Also, do not check defer for the slave host,
92                  * because only master DSI device adds the panel to global
93                  * panel list. The panel's device is the master DSI device.
94                  */
95                 ret = msm_dsi_host_register(slave_link_dsi->host);
96                 if (ret)
97                         return ret;
98                 ret = msm_dsi_host_register(master_link_dsi->host);
99                 if (ret)
100                         return ret;
101
102                 /* PLL0 is to drive both 2 DSI link clocks in bonded DSI mode. */
103                 msm_dsi_phy_set_usecase(clk_master_dsi->phy,
104                                         MSM_DSI_PHY_MASTER);
105                 msm_dsi_phy_set_usecase(clk_slave_dsi->phy,
106                                         MSM_DSI_PHY_SLAVE);
107                 msm_dsi_host_set_phy_mode(msm_dsi->host, msm_dsi->phy);
108                 msm_dsi_host_set_phy_mode(other_dsi->host, other_dsi->phy);
109         }
110
111         return 0;
112 }
113
114 static int enable_phy(struct msm_dsi *msm_dsi,
115                       struct msm_dsi_phy_shared_timings *shared_timings)
116 {
117         struct msm_dsi_phy_clk_request clk_req;
118         bool is_bonded_dsi = IS_BONDED_DSI();
119
120         msm_dsi_host_get_phy_clk_req(msm_dsi->host, &clk_req, is_bonded_dsi);
121
122         return msm_dsi_phy_enable(msm_dsi->phy, &clk_req, shared_timings);
123 }
124
125 static int
126 dsi_mgr_phy_enable(int id,
127                    struct msm_dsi_phy_shared_timings shared_timings[DSI_MAX])
128 {
129         struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id);
130         struct msm_dsi *mdsi = dsi_mgr_get_dsi(DSI_CLOCK_MASTER);
131         struct msm_dsi *sdsi = dsi_mgr_get_dsi(DSI_CLOCK_SLAVE);
132         int ret;
133
134         /* In case of bonded DSI, some registers in PHY1 have been programmed
135          * during PLL0 clock's set_rate. The PHY1 reset called by host1 here
136          * will silently reset those PHY1 registers. Therefore we need to reset
137          * and enable both PHYs before any PLL clock operation.
138          */
139         if (IS_BONDED_DSI() && mdsi && sdsi) {
140                 if (!mdsi->phy_enabled && !sdsi->phy_enabled) {
141                         msm_dsi_host_reset_phy(mdsi->host);
142                         msm_dsi_host_reset_phy(sdsi->host);
143
144                         ret = enable_phy(mdsi,
145                                          &shared_timings[DSI_CLOCK_MASTER]);
146                         if (ret)
147                                 return ret;
148                         ret = enable_phy(sdsi,
149                                          &shared_timings[DSI_CLOCK_SLAVE]);
150                         if (ret) {
151                                 msm_dsi_phy_disable(mdsi->phy);
152                                 return ret;
153                         }
154                 }
155         } else {
156                 msm_dsi_host_reset_phy(msm_dsi->host);
157                 ret = enable_phy(msm_dsi, &shared_timings[id]);
158                 if (ret)
159                         return ret;
160         }
161
162         msm_dsi->phy_enabled = true;
163
164         return 0;
165 }
166
167 static void dsi_mgr_phy_disable(int id)
168 {
169         struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id);
170         struct msm_dsi *mdsi = dsi_mgr_get_dsi(DSI_CLOCK_MASTER);
171         struct msm_dsi *sdsi = dsi_mgr_get_dsi(DSI_CLOCK_SLAVE);
172
173         /* disable DSI phy
174          * In bonded dsi configuration, the phy should be disabled for the
175          * first controller only when the second controller is disabled.
176          */
177         msm_dsi->phy_enabled = false;
178         if (IS_BONDED_DSI() && mdsi && sdsi) {
179                 if (!mdsi->phy_enabled && !sdsi->phy_enabled) {
180                         msm_dsi_phy_disable(sdsi->phy);
181                         msm_dsi_phy_disable(mdsi->phy);
182                 }
183         } else {
184                 msm_dsi_phy_disable(msm_dsi->phy);
185         }
186 }
187
188 struct dsi_bridge {
189         struct drm_bridge base;
190         int id;
191 };
192
193 #define to_dsi_bridge(x) container_of(x, struct dsi_bridge, base)
194
195 static int dsi_mgr_bridge_get_id(struct drm_bridge *bridge)
196 {
197         struct dsi_bridge *dsi_bridge = to_dsi_bridge(bridge);
198         return dsi_bridge->id;
199 }
200
201 static void msm_dsi_manager_set_split_display(u8 id)
202 {
203         struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id);
204         struct msm_dsi *other_dsi = dsi_mgr_get_other_dsi(id);
205         struct msm_drm_private *priv = msm_dsi->dev->dev_private;
206         struct msm_kms *kms = priv->kms;
207         struct msm_dsi *master_dsi, *slave_dsi;
208
209         if (IS_BONDED_DSI() && !IS_MASTER_DSI_LINK(id)) {
210                 master_dsi = other_dsi;
211                 slave_dsi = msm_dsi;
212         } else {
213                 master_dsi = msm_dsi;
214                 slave_dsi = other_dsi;
215         }
216
217         if (!msm_dsi->external_bridge || !IS_BONDED_DSI())
218                 return;
219
220         /*
221          * Set split display info to kms once bonded DSI panel is connected to
222          * both hosts.
223          */
224         if (other_dsi && other_dsi->external_bridge && kms->funcs->set_split_display) {
225                 kms->funcs->set_split_display(kms, master_dsi->encoder,
226                                               slave_dsi->encoder,
227                                               msm_dsi_is_cmd_mode(msm_dsi));
228         }
229 }
230
231 static int dsi_mgr_bridge_power_on(struct drm_bridge *bridge)
232 {
233         int id = dsi_mgr_bridge_get_id(bridge);
234         struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id);
235         struct msm_dsi *msm_dsi1 = dsi_mgr_get_dsi(DSI_1);
236         struct mipi_dsi_host *host = msm_dsi->host;
237         struct msm_dsi_phy_shared_timings phy_shared_timings[DSI_MAX];
238         bool is_bonded_dsi = IS_BONDED_DSI();
239         int ret;
240
241         DBG("id=%d", id);
242
243         ret = dsi_mgr_phy_enable(id, phy_shared_timings);
244         if (ret)
245                 goto phy_en_fail;
246
247         ret = msm_dsi_host_power_on(host, &phy_shared_timings[id], is_bonded_dsi, msm_dsi->phy);
248         if (ret) {
249                 pr_err("%s: power on host %d failed, %d\n", __func__, id, ret);
250                 goto host_on_fail;
251         }
252
253         if (is_bonded_dsi && msm_dsi1) {
254                 ret = msm_dsi_host_power_on(msm_dsi1->host,
255                                 &phy_shared_timings[DSI_1], is_bonded_dsi, msm_dsi1->phy);
256                 if (ret) {
257                         pr_err("%s: power on host1 failed, %d\n",
258                                                         __func__, ret);
259                         goto host1_on_fail;
260                 }
261         }
262
263         /*
264          * Enable before preparing the panel, disable after unpreparing, so
265          * that the panel can communicate over the DSI link.
266          */
267         msm_dsi_host_enable_irq(host);
268         if (is_bonded_dsi && msm_dsi1)
269                 msm_dsi_host_enable_irq(msm_dsi1->host);
270
271         return 0;
272
273 host1_on_fail:
274         msm_dsi_host_power_off(host);
275 host_on_fail:
276         dsi_mgr_phy_disable(id);
277 phy_en_fail:
278         return ret;
279 }
280
281 static void dsi_mgr_bridge_power_off(struct drm_bridge *bridge)
282 {
283         int id = dsi_mgr_bridge_get_id(bridge);
284         struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id);
285         struct msm_dsi *msm_dsi1 = dsi_mgr_get_dsi(DSI_1);
286         struct mipi_dsi_host *host = msm_dsi->host;
287         bool is_bonded_dsi = IS_BONDED_DSI();
288
289         msm_dsi_host_disable_irq(host);
290         if (is_bonded_dsi && msm_dsi1) {
291                 msm_dsi_host_disable_irq(msm_dsi1->host);
292                 msm_dsi_host_power_off(msm_dsi1->host);
293         }
294         msm_dsi_host_power_off(host);
295         dsi_mgr_phy_disable(id);
296 }
297
298 static void dsi_mgr_bridge_pre_enable(struct drm_bridge *bridge)
299 {
300         int id = dsi_mgr_bridge_get_id(bridge);
301         struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id);
302         struct msm_dsi *msm_dsi1 = dsi_mgr_get_dsi(DSI_1);
303         struct mipi_dsi_host *host = msm_dsi->host;
304         bool is_bonded_dsi = IS_BONDED_DSI();
305         int ret;
306
307         DBG("id=%d", id);
308         if (!msm_dsi_device_connected(msm_dsi))
309                 return;
310
311         /* Do nothing with the host if it is slave-DSI in case of bonded DSI */
312         if (is_bonded_dsi && !IS_MASTER_DSI_LINK(id))
313                 return;
314
315         ret = dsi_mgr_bridge_power_on(bridge);
316         if (ret) {
317                 dev_err(&msm_dsi->pdev->dev, "Power on failed: %d\n", ret);
318                 return;
319         }
320
321         ret = msm_dsi_host_enable(host);
322         if (ret) {
323                 pr_err("%s: enable host %d failed, %d\n", __func__, id, ret);
324                 goto host_en_fail;
325         }
326
327         if (is_bonded_dsi && msm_dsi1) {
328                 ret = msm_dsi_host_enable(msm_dsi1->host);
329                 if (ret) {
330                         pr_err("%s: enable host1 failed, %d\n", __func__, ret);
331                         goto host1_en_fail;
332                 }
333         }
334
335         return;
336
337 host1_en_fail:
338         msm_dsi_host_disable(host);
339 host_en_fail:
340         dsi_mgr_bridge_power_off(bridge);
341 }
342
343 void msm_dsi_manager_tpg_enable(void)
344 {
345         struct msm_dsi *m_dsi = dsi_mgr_get_dsi(DSI_0);
346         struct msm_dsi *s_dsi = dsi_mgr_get_dsi(DSI_1);
347
348         /* if dual dsi, trigger tpg on master first then slave */
349         if (m_dsi) {
350                 msm_dsi_host_test_pattern_en(m_dsi->host);
351                 if (IS_BONDED_DSI() && s_dsi)
352                         msm_dsi_host_test_pattern_en(s_dsi->host);
353         }
354 }
355
356 static void dsi_mgr_bridge_post_disable(struct drm_bridge *bridge)
357 {
358         int id = dsi_mgr_bridge_get_id(bridge);
359         struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id);
360         struct msm_dsi *msm_dsi1 = dsi_mgr_get_dsi(DSI_1);
361         struct mipi_dsi_host *host = msm_dsi->host;
362         bool is_bonded_dsi = IS_BONDED_DSI();
363         int ret;
364
365         DBG("id=%d", id);
366
367         if (!msm_dsi_device_connected(msm_dsi))
368                 return;
369
370         /*
371          * Do nothing with the host if it is slave-DSI in case of bonded DSI.
372          * It is safe to call dsi_mgr_phy_disable() here because a single PHY
373          * won't be diabled until both PHYs request disable.
374          */
375         if (is_bonded_dsi && !IS_MASTER_DSI_LINK(id))
376                 goto disable_phy;
377
378         ret = msm_dsi_host_disable(host);
379         if (ret)
380                 pr_err("%s: host %d disable failed, %d\n", __func__, id, ret);
381
382         if (is_bonded_dsi && msm_dsi1) {
383                 ret = msm_dsi_host_disable(msm_dsi1->host);
384                 if (ret)
385                         pr_err("%s: host1 disable failed, %d\n", __func__, ret);
386         }
387
388         msm_dsi_host_disable_irq(host);
389         if (is_bonded_dsi && msm_dsi1)
390                 msm_dsi_host_disable_irq(msm_dsi1->host);
391
392         /* Save PHY status if it is a clock source */
393         msm_dsi_phy_pll_save_state(msm_dsi->phy);
394
395         ret = msm_dsi_host_power_off(host);
396         if (ret)
397                 pr_err("%s: host %d power off failed,%d\n", __func__, id, ret);
398
399         if (is_bonded_dsi && msm_dsi1) {
400                 ret = msm_dsi_host_power_off(msm_dsi1->host);
401                 if (ret)
402                         pr_err("%s: host1 power off failed, %d\n",
403                                                                 __func__, ret);
404         }
405
406 disable_phy:
407         dsi_mgr_phy_disable(id);
408 }
409
410 static void dsi_mgr_bridge_mode_set(struct drm_bridge *bridge,
411                 const struct drm_display_mode *mode,
412                 const struct drm_display_mode *adjusted_mode)
413 {
414         int id = dsi_mgr_bridge_get_id(bridge);
415         struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id);
416         struct msm_dsi *other_dsi = dsi_mgr_get_other_dsi(id);
417         struct mipi_dsi_host *host = msm_dsi->host;
418         bool is_bonded_dsi = IS_BONDED_DSI();
419
420         DBG("set mode: " DRM_MODE_FMT, DRM_MODE_ARG(mode));
421
422         if (is_bonded_dsi && !IS_MASTER_DSI_LINK(id))
423                 return;
424
425         msm_dsi_host_set_display_mode(host, adjusted_mode);
426         if (is_bonded_dsi && other_dsi)
427                 msm_dsi_host_set_display_mode(other_dsi->host, adjusted_mode);
428 }
429
430 static enum drm_mode_status dsi_mgr_bridge_mode_valid(struct drm_bridge *bridge,
431                                                       const struct drm_display_info *info,
432                                                       const struct drm_display_mode *mode)
433 {
434         int id = dsi_mgr_bridge_get_id(bridge);
435         struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id);
436         struct mipi_dsi_host *host = msm_dsi->host;
437         struct platform_device *pdev = msm_dsi->pdev;
438         struct dev_pm_opp *opp;
439         unsigned long byte_clk_rate;
440
441         byte_clk_rate = dsi_byte_clk_get_rate(host, IS_BONDED_DSI(), mode);
442
443         opp = dev_pm_opp_find_freq_ceil(&pdev->dev, &byte_clk_rate);
444         if (!IS_ERR(opp)) {
445                 dev_pm_opp_put(opp);
446         } else if (PTR_ERR(opp) == -ERANGE) {
447                 /*
448                  * An empty table is created by devm_pm_opp_set_clkname() even
449                  * if there is none. Thus find_freq_ceil will still return
450                  * -ERANGE in such case.
451                  */
452                 if (dev_pm_opp_get_opp_count(&pdev->dev) != 0)
453                         return MODE_CLOCK_RANGE;
454         } else {
455                         return MODE_ERROR;
456         }
457
458         return msm_dsi_host_check_dsc(host, mode);
459 }
460
461 static const struct drm_bridge_funcs dsi_mgr_bridge_funcs = {
462         .pre_enable = dsi_mgr_bridge_pre_enable,
463         .post_disable = dsi_mgr_bridge_post_disable,
464         .mode_set = dsi_mgr_bridge_mode_set,
465         .mode_valid = dsi_mgr_bridge_mode_valid,
466 };
467
468 /* initialize bridge */
469 int msm_dsi_manager_bridge_init(struct msm_dsi *msm_dsi)
470 {
471         struct drm_bridge *bridge = NULL;
472         struct dsi_bridge *dsi_bridge;
473         struct drm_encoder *encoder;
474         int ret;
475
476         dsi_bridge = devm_kzalloc(msm_dsi->dev->dev,
477                                 sizeof(*dsi_bridge), GFP_KERNEL);
478         if (!dsi_bridge)
479                 return -ENOMEM;
480
481         dsi_bridge->id = msm_dsi->id;
482
483         encoder = msm_dsi->encoder;
484
485         bridge = &dsi_bridge->base;
486         bridge->funcs = &dsi_mgr_bridge_funcs;
487
488         ret = devm_drm_bridge_add(msm_dsi->dev->dev, bridge);
489         if (ret)
490                 return ret;
491
492         ret = drm_bridge_attach(encoder, bridge, NULL, 0);
493         if (ret)
494                 return ret;
495
496         msm_dsi->bridge = bridge;
497
498         return 0;
499 }
500
501 int msm_dsi_manager_ext_bridge_init(u8 id)
502 {
503         struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id);
504         struct drm_device *dev = msm_dsi->dev;
505         struct drm_encoder *encoder;
506         struct drm_bridge *int_bridge, *ext_bridge;
507         int ret;
508
509         int_bridge = msm_dsi->bridge;
510         ext_bridge = devm_drm_of_get_bridge(&msm_dsi->pdev->dev,
511                                             msm_dsi->pdev->dev.of_node, 1, 0);
512         if (IS_ERR(ext_bridge))
513                 return PTR_ERR(ext_bridge);
514
515         msm_dsi->external_bridge = ext_bridge;
516
517         encoder = msm_dsi->encoder;
518
519         /*
520          * Try first to create the bridge without it creating its own
521          * connector.. currently some bridges support this, and others
522          * do not (and some support both modes)
523          */
524         ret = drm_bridge_attach(encoder, ext_bridge, int_bridge,
525                         DRM_BRIDGE_ATTACH_NO_CONNECTOR);
526         if (ret == -EINVAL) {
527                 /*
528                  * link the internal dsi bridge to the external bridge,
529                  * connector is created by the next bridge.
530                  */
531                 ret = drm_bridge_attach(encoder, ext_bridge, int_bridge, 0);
532                 if (ret < 0)
533                         return ret;
534         } else {
535                 struct drm_connector *connector;
536
537                 /* We are in charge of the connector, create one now. */
538                 connector = drm_bridge_connector_init(dev, encoder);
539                 if (IS_ERR(connector)) {
540                         DRM_ERROR("Unable to create bridge connector\n");
541                         return PTR_ERR(connector);
542                 }
543
544                 ret = drm_connector_attach_encoder(connector, encoder);
545                 if (ret < 0)
546                         return ret;
547         }
548
549         /* The pipeline is ready, ping encoders if necessary */
550         msm_dsi_manager_set_split_display(id);
551
552         return 0;
553 }
554
555 int msm_dsi_manager_cmd_xfer(int id, const struct mipi_dsi_msg *msg)
556 {
557         struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id);
558         struct msm_dsi *msm_dsi0 = dsi_mgr_get_dsi(DSI_0);
559         struct mipi_dsi_host *host = msm_dsi->host;
560         bool is_read = (msg->rx_buf && msg->rx_len);
561         bool need_sync = (IS_SYNC_NEEDED() && !is_read);
562         int ret;
563
564         if (!msg->tx_buf || !msg->tx_len)
565                 return 0;
566
567         /* In bonded master case, panel requires the same commands sent to
568          * both DSI links. Host issues the command trigger to both links
569          * when DSI_1 calls the cmd transfer function, no matter it happens
570          * before or after DSI_0 cmd transfer.
571          */
572         if (need_sync && (id == DSI_0))
573                 return is_read ? msg->rx_len : msg->tx_len;
574
575         if (need_sync && msm_dsi0) {
576                 ret = msm_dsi_host_xfer_prepare(msm_dsi0->host, msg);
577                 if (ret) {
578                         pr_err("%s: failed to prepare non-trigger host, %d\n",
579                                 __func__, ret);
580                         return ret;
581                 }
582         }
583         ret = msm_dsi_host_xfer_prepare(host, msg);
584         if (ret) {
585                 pr_err("%s: failed to prepare host, %d\n", __func__, ret);
586                 goto restore_host0;
587         }
588
589         ret = is_read ? msm_dsi_host_cmd_rx(host, msg) :
590                         msm_dsi_host_cmd_tx(host, msg);
591
592         msm_dsi_host_xfer_restore(host, msg);
593
594 restore_host0:
595         if (need_sync && msm_dsi0)
596                 msm_dsi_host_xfer_restore(msm_dsi0->host, msg);
597
598         return ret;
599 }
600
601 bool msm_dsi_manager_cmd_xfer_trigger(int id, u32 dma_base, u32 len)
602 {
603         struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id);
604         struct msm_dsi *msm_dsi0 = dsi_mgr_get_dsi(DSI_0);
605         struct mipi_dsi_host *host = msm_dsi->host;
606
607         if (IS_SYNC_NEEDED() && (id == DSI_0))
608                 return false;
609
610         if (IS_SYNC_NEEDED() && msm_dsi0)
611                 msm_dsi_host_cmd_xfer_commit(msm_dsi0->host, dma_base, len);
612
613         msm_dsi_host_cmd_xfer_commit(host, dma_base, len);
614
615         return true;
616 }
617
618 int msm_dsi_manager_register(struct msm_dsi *msm_dsi)
619 {
620         struct msm_dsi_manager *msm_dsim = &msm_dsim_glb;
621         int id = msm_dsi->id;
622         int ret;
623
624         if (id >= DSI_MAX) {
625                 pr_err("%s: invalid id %d\n", __func__, id);
626                 return -EINVAL;
627         }
628
629         if (msm_dsim->dsi[id]) {
630                 pr_err("%s: dsi%d already registered\n", __func__, id);
631                 return -EBUSY;
632         }
633
634         msm_dsim->dsi[id] = msm_dsi;
635
636         ret = dsi_mgr_parse_of(msm_dsi->pdev->dev.of_node, id);
637         if (ret) {
638                 pr_err("%s: failed to parse OF DSI info\n", __func__);
639                 goto fail;
640         }
641
642         ret = dsi_mgr_setup_components(id);
643         if (ret) {
644                 pr_err("%s: failed to register mipi dsi host for DSI %d: %d\n",
645                         __func__, id, ret);
646                 goto fail;
647         }
648
649         return 0;
650
651 fail:
652         msm_dsim->dsi[id] = NULL;
653         return ret;
654 }
655
656 void msm_dsi_manager_unregister(struct msm_dsi *msm_dsi)
657 {
658         struct msm_dsi_manager *msm_dsim = &msm_dsim_glb;
659
660         if (msm_dsi->host)
661                 msm_dsi_host_unregister(msm_dsi->host);
662
663         if (msm_dsi->id >= 0)
664                 msm_dsim->dsi[msm_dsi->id] = NULL;
665 }
666
667 bool msm_dsi_is_bonded_dsi(struct msm_dsi *msm_dsi)
668 {
669         return IS_BONDED_DSI();
670 }
671
672 bool msm_dsi_is_master_dsi(struct msm_dsi *msm_dsi)
673 {
674         return IS_MASTER_DSI_LINK(msm_dsi->id);
675 }